The melittin used in the dissertation was isolated and purified through polydextran gel from honeybee (Apis mellifera lijustica) worker venom which was collected by QF-1 Super Auto Electronic BV-Collector at Teaching Apiary of Bee Science College in Fujian Agriculture and Forest University. The separated component was approved by electrophoresis to be at electrophoretic purification. To evaluate its radiation-proof effect on mice in our experiment, the melittin was injected into the abdomental ca...